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    Question

    Which is a contact

    insecticide?
    A Quinolphos Correct Answer Incorrect Answer
    B Carbofuron Correct Answer Incorrect Answer
    C Fenazaquin Correct Answer Incorrect Answer
    D Dimethoate Correct Answer Incorrect Answer

    Solution

    Conatct Insecticide: contact insecticide Any insecticide (see pesticide) that kills its target insect by being absorbed through the cuticle or by blocking the spiracles, rather than by being ingested Quinolphos – An organophosphate contact insecticide used against pests in crops like cotton, rice, and vegetables. Dimethoate – Another organophosphate that acts as both a contact and systemic insecticide, effective against sucking and chewing insects. Carbofuran – A systemic carbamate insecticide (not primarily contact-based). Fenazaquin – Mainly a contact acaricide (miticide) used against mites, not a broad-spectrum insecticide.

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